[PATCH 1/2] miiphyutil: Fix inconsistent miiphy_write() error return value

[Daniel Klauer <daniel.klauer@gin.de>]

miiphy_write() should not directly return the error return value from
bus->write(), because that is typically a -errno value, while generally
miiphy_write() and other miiphy_*() functions return 1 on error.
Some miiphy_write() callers only check for > 0 to detect errors.

Fix it to match miiphy_read(), which also converts bus->read() failure
to "return 1".

Signed-off-by: Daniel Klauer <daniel.klauer@gin.de>
---
 common/miiphyutil.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/common/miiphyutil.c b/common/miiphyutil.c
index 7d4d15ed91..86a27665e3 100644
--- a/common/miiphyutil.c
+++ b/common/miiphyutil.c
@@ -236,7 +236,7 @@ static struct mii_dev *miiphy_get_active_dev(const char *devname)
  * This API is deprecated. Use phy_read on a phy_device found via phy_connect
  *
  * Returns:
- *   0 on success
+ *   0 on success, 1 on error
  */
 int miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
 		 unsigned short *value)
@@ -264,18 +264,23 @@ int miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
  * This API is deprecated. Use phy_write on a phy_device found by phy_connect
  *
  * Returns:
- *   0 on success
+ *   0 on success, 1 on error
  */
 int miiphy_write(const char *devname, unsigned char addr, unsigned char reg,
 		  unsigned short value)
 {
 	struct mii_dev *bus;
+	int ret;
 
 	bus = miiphy_get_active_dev(devname);
-	if (bus)
-		return bus->write(bus, addr, MDIO_DEVAD_NONE, reg, value);
+	if (!bus)
+		return 1;
 
-	return 1;
+	ret = bus->write(bus, addr, MDIO_DEVAD_NONE, reg, value);
+	if (ret < 0)
+		return 1;
+
+	return 0;
 }
 
 /*****************************************************************************
-- 
2.32.0